This ancient Hawaiian henge may have been an early star chart.

Race through the maze, get your name on the sign.

This coastal cavern is associated with the Hawaiian god of creation.

This former luxury resort in Kaua'i is now an abandoned relic.

This monument built by Japanese American immigrants spent decades underground.

Now a pedestrian bridge, this was once part of a narrow-gauge railroad that ran along the east coast of Kauai.

A local pineapple cannery once dumped pineapple trimmings off of this pier, with sometimes smelly results.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

Submerged lava formations create incredible waterworks.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

This blowhole is supposedly caused by a trapped monster.

A burial ground for workers at one of Hawai'i's largest sugarcane producers that laid buried for decades.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

A Japanese pilot crash-landed on this Hawaiian island after the Pearl Harbor attack and terrorized locals for a week.

The world's largest aggregation of great white sharks is at a mysterious spot in the middle of the ocean.

This airstrip atoll is uninhabited by humans, but absolutely full of birds.

The rusting hulk of a 250-foot-long merchant vessel remains where she grounded on the shore of Hudson Bay.

You don't have to visit the deep blue sea to see these majestic creatures swimming wild and free.

This former outpost was designed to protect the lucrative fur trade of the 18th century.

A crash site in the heart of polar bear territory has become a beloved local landmark.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

This igloo-shaped landmark in Iqaluit serves as the seat of the Diocese of the Arctic.